The atonement
He Himself bore our sins in His body on the tree.
Surely He took on our infirmities and carried our sorrows; yet we considered Him stricken by God, struck down and afflicted. But He was pierced for our transgressions, He was crushed for our iniquities; the punishment that brought us peace was upon Him, and by His stripes we are healed. We all like sheep have gone astray, each one has turned to his own way; and the LORD has laid upon Him the iniquity of us all. He was oppressed and afflicted, yet He did not open His mouth. He was led like a lamb to the slaughter, and as a sheep before her shearers is silent, so He did not open His mouth. By oppression and judgment He was taken away, and who can recount His descendants? For He was cut off from the land of the living; He was stricken for the transgression of My people. He was assigned a grave with the wicked, and with a rich man in His death, although He had done no violence, nor was any deceit in His mouth. …
Isaiah 53:4–12
But now, apart from the law, the righteousness of God has been revealed, as attested by the Law and the Prophets. And this righteousness from God comes through faith in Jesus Christ to all who believe. There is no distinction, for all have sinned and fall short of the glory of God, and are justified freely by His grace through the redemption that is in Christ Jesus. God presented Him as the atoning sacrifice through faith in His blood, in order to demonstrate His righteousness, because in His forbearance He had passed over the sins committed beforehand. He did this to demonstrate His righteousness at the present time, so as to be just and to justify the one who has faith in Jesus.
Romans 3:21–26
God made Him who knew no sin to be sin on our behalf, so that in Him we might become the righteousness of God.
2 Corinthians 5:21
He Himself bore our sins in His body on the tree, so that we might die to sin and live to righteousness. “By His stripes you are healed.”
1 Peter 2:24
For Christ also suffered for sins once for all, the righteous for the unrighteous, to bring you to God. He was put to death in the body but made alive in the Spirit,
1 Peter 3:18
But when Christ came as high priest of the good things that have come, He went through the greater and more perfect tabernacle that is not made by hands and is not a part of this creation. He did not enter by the blood of goats and calves, but He entered the Most Holy Place once for all by His own blood, thus securing eternal redemption. For if the blood of goats and bulls and the ashes of a heifer sprinkled on those who are ceremonially unclean sanctify them so that their bodies are clean, how much more will the blood of Christ, who through the eternal Spirit offered Himself unblemished to God, purify our consciences from works of death, so that we may serve the living God! Therefore Christ is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, now that He has died to redeem them from the transgressions committed under the first covenant. In the case of a will, it is necessary to establish the death of the one who made it, …
Hebrews 9:11–28
For even the Son of Man did not come to be served, but to serve, and to give His life as a ransom for many.”
Mark 10:45